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DIR 1000587R0002 (Version 02)
3.7.2. Trip
The list of trips recorded by the tip unit is available in the Measurements-Log Files-Openings section. Information about the last
trip is also available from the main page by pressing the iTest button three times.
Each trip is recorded with useful information enabling it to be identifi ed:
n. 02
L Protection
I1:
625 A
I3:
623 A
I2:
617 A
Ne: > 10.0 kA
Jan 06, 2004
08:52:11:733
Last Trip
Number of trips:
nr01 is the latest;
maximum 20 trips
Currents recorded at
trip time
Tripped protection
Date and time of trip
Use the UP and DOWN buttons to scroll all the trips recorded in the Openings menu.
ATTENTION: After a trip has occurred, the page with the recorded trip appears on the display. Press iTest to
remove it and go back to the main page.
ATTENTION: with the trip unit off after a trip has occurred, press the itest button to display the page with the
recorded trip for a few seconds. The trip will be displayed for approximately 48 hours, because the trip unit is
self powered. To maintain the trip status beyond 48 hours, the use of a separate 24V DC power source is recom-
mended.
3.7.3. Events
The list of trips recorded by the trip unit is available in the Measurements-Log Files-Events section.
The page of each event is similar to that of the trips, with a description of the event instead of the message about the protection
and numbering that refers to the last event recorded (Last, Last-1, Last-2,...).
LSIG-MM are able to record up to 80 events. Use the UP and DOWN buttons to scroll all the events.
3.7.4.
Measurements Log register
LSIG-MM can record various different measurements and allow the recording time between one measurement and the next to be set.
The measurements are available in the Measurements-Log Files-Measurements section:
Name
Description
I Max
Rms value and maximum current phase
Reset measurements
Meter reset command
Each measurement available is shown on the display by a graphic page:
Date and time of recorded measure
Value of selected
measure
Type of measure
Selected recording time
Graphical representation of last 25 measures.
Selected measure blinks
Use the UP and DOWN buttons to scroll all the recordings of each measurement.
Select the Measurement reset command to reset all the recordings.
The recording time can be adjusted in the Settings-Measurement interval menu.
3.7.5. Peak
factor
The peak factor measurement, a ratio between I
peak
/ I
rms
is available for each current phase.
The measurement is not displayed if the current is less than 0.3xIn and is not available for currents exceeding 6xIn.
Type of measurement range
Range of values measured by the
trip unit
Standard operation
Range
Tolerance %
Peak factor
0.3 ... 6 In
0.3 ... 6 In
± 1.5
3.7.6. Contact
wear
This sub-menu displays the percentage of wear on the CB contacts.
